Serving machine for use in practicing volleyball



FIG. 1 is a front elevational view of a serving machine for use in practicing volleyball according to our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear perspective view showing from the left side thereof;

FIG. 8 is a rear perspective view showing from the right side thereof. 

The ornamental design for a serving machine for use in practicing volleyball, as shown and described. 